Paris - Île-de-France
- Courtaigne
- Courte
- Courtiade
- Courtonne
- Cousinou
- Coussegal
- Coussement
- Coustal
- Cousteix
- Coustet
- Coute
- Couteille
- Coutelen
- Coutheillas
- Couthon
- Couthouis
- Coutolleau
- Coutou
- Coutris
- Coutureau
- Couve de Murville
- Couverchel
- Couzi
- Couzon
- Couzy
- Covas
- Coviaux
- Covier
- Coy
- Coyac
- Coyle
- Coz
- Cracco
- Crampe
- Crane
- Crapart
- Crapoulet
- Crausaz
- Cremaschi
- Cremniter
- Cremoux
- Crepet
- Crepu
- Crescendo
- Cressant
- Cresseaux
- Cressy
- Creste
- Crestinu
- Cretegny
- Cretel
- Cretenet
- Cretois
- Creuse
- Creze
- Cristiani
- Cristofoli
- Crivelli
- Croci
- Croguennec
- Croibier
- Croize
- Croizier
- Crombecque
- Crotti
- Crouau
- Croullebois
- Crowley
- Crozon
- Cru
- Cruset
- Cruzel
- Crèche
- Crépin
- Crété
- Cubells
- Cubero
- Cuccia
- Cudicio
- Cuellar
- Cueto
- Cuiec
- Cuillier
- Cuinet
- Cuirassier
- Cuisiniez
- Culafic
- Cullet
- Culos
- Cumin
- Cunanan
- Cureau
- Cusey
- Cusin
- Cuvelette
- Cuypers
- Cvetkovic
- Cygler
- Cyna
- Cyngiser